Selelekela:
Ho rolara ho fetohile mokhoa o ratoang oa ho sebelisa lipekere holim'a likhoele tsa aluminium ka lebaka la bokhoni le katleho ea tsona. Ka tlhoko e ntseng e eketseha ea lihlahisoa tsa aluminium tse koahetsoeng tsa boleng bo holimo le tse tšoarellang, ho rolara ho fetohile ts'ebetso ea bohlokoa indastering ea aluminium. Leha ho le joalo, e le ho fihlela liphetho tse lakatsehang, ho bohlokoa ho utloisisa litlhoko tse ikhethileng tsa ts'ebetso bakeng sa ho rolara. Bukeng ena, re tla hlahloba litlhoko tsa bohlokoa tsa ts'ebetso tseo lipekere tsa ho rolara li lokelang ho li phethahatsa, re shebane le litšobotsi tsa ho teteana le ho leka-lekana, ho fola kapele, likarolo tsa mekhabiso le ho hanyetsa boemo ba leholimo.
1. Viscosity e nepahetseng le thepa e ntle ea ho leka-lekanya:
Ts'ebetso ea ho roala rola e kenyelletsa ho fepa ka lebanta ka potlako, ho roala rola, ho baka ka mocheso o phahameng, le ho pholisa ka potlako. Ho netefatsa litšobotsi tse ntle tsa ho leka-lekanya, ho bohlokoa hore rolara ea ho rola e sebelise pente e lekaneng holim'a thepa ea aluminium. Ka hona, li-coating tsa rolara li tlameha ho ba le viscosity e loketseng le litšobotsi tse ntle tsa ho leka-lekanya. Viscosity ea rolara e lokela ho etsoa ka hloko ho lumella tšebeliso e bonolo ha e ntse e boloka bokhoni ba eona ba ho lekana ka ho lekana holim'a bokaholimo ba aluminium. Ho fihlela tekano e nepahetseng ea viscosity ho bohlokoa ho thibela mathata a kang botenya bo sa lekanang ba rolara, mela le litlamorao tsa peel ea lamunu.
2. Phekolo e potlakileng:
Ka lebaka la tlhaho e potlakileng ea mela ea tlhahiso ea roller coating, ho lokisa kapele ke tlhoko ea bohlokoa bakeng sa roller coating coating. Ka lebaka la ho se tšehetse le bolelele bo fokolang ba onto ea ho baka, nako e fumanehang ea hore pente e hloekisoe e fokotsehile haholo. Pente tse sebelisoang roller coating li tlameha ho etsoa hore li hloekisoe ka nako e khuts'oane, haholo-holo metsotsoana e ka tlase ho 60. Ho feta moo, ts'ebetso ea ho lokisa e lokela ho boloka pente e le ka tlase ho mocheso oa coil oa 260°C ho thibela thepa ho fetoha kapa ho se sebetse hantle. Ho hlokahala khetho e nepahetseng ea solvent ho fihlella ho fola kapele ntle le ho beha botšepehi ba seaparo kotsing, ho qoba mathata a tloaelehileng joalo ka ho phatloha ha metsi, masoba a pin, le ho se leka-lekane hantle.
3. Likarolo tsa mekhabiso:
Ntle le litšobotsi tse sebetsang, liphahlo tse koahelang tse roller le tsona li tlameha ho fihlela litlhoko tsa mekhabiso. Pente ea polyester hangata e lekane ho fihlela ponahalo e lakatsehang ka ts'ebeliso e le 'ngoe. Leha ho le joalo, ha ho sebelisoa sephahlo sa fluorocarbon, primer le topcoat lia hlokahala bakeng sa liphetho tse ntle tsa mekhabiso. Primer e lokela ho ba le khanyetso e ntle ea mafome le ho khomarela substrate le topcoat, ha topcoat e lokela ho bontša matla a matle a ho ipata le litšobotsi tsa mekhabiso. Seaparo se le seng sa primer se lateloang ke seaparo se le seng sa topcoat se ka fella ka ponahalo e ntle e fihlelang litlhoko tsa botle le tsa ts'ebetso.
4. Khanyetso ea boemo ba leholimo:
Liaparo tse koahelang tse roller li tlameha ho bontša ho hanyetsa boemo ba leholimo ka tsela e ikhethang, haholo-holo ha li sebelisoa lihlahisoa tsa aluminium tsa kantle. Liaparo tse koahelang tse entsoeng ka PVDF fluorocarbon li atisa ho sebelisoa ho fana ka ts'ebetso e felletseng khahlanong le lintlha tse kang ho tšoarella, pula ea asiti, tšilafalo ea moea, mafome, matheba a emeng le hlobo. Ho latela litlhoko tse ikhethileng tsa sebaka, ho ka sebelisoa liaparo tse peli, tse tharo, kapa tse 'ne tsa PVDF. Sena se netefatsa tšireletso e tšoarellang nako e telele le ho mamella ka botlalo, ho lumella coil ea aluminium e koahetsoeng ho mamella esita le maemo a thata ka ho fetisisa a tikoloho.
Qetello:
Qetellong, ho fihlella tshebetso e ikgethang ya roller coating bakeng sa dikhoele tsa aluminium ho hloka ho nahana ka hloko ka ho hlaka ha roller coating le thepa ya ho leka-lekanya, bokgoni ba ho fola kapele, dikarolo tsa mokhabiso, le ho hanyetsa boemo ba lehodimo. Ka ho utlwisisa le ho kgomarela ditlhoko tsena tsa tshebetso, bahlahisi ba ka hlahisa dihlahiswa tsa aluminium tse manehilweng tsa boleng bo hodimo tse fihlelang maemo a hlokahalang a diindasteri tse fapaneng. Ha tlhokeho ya dikhoele tsa aluminium tse tshepahalang le tse kgahlehang ka pono e ntse e hola, ho bohlokwa ho beha pele kgetho le tshebediso ya dikhoele tsa roller coating tse ka fihlellang ditlhoko tsena tsa bohlokwa tsa tshebetso.
Nako ea poso: Mphalane-27-2023
